/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Operations/QuadGridPatchUtil.h
Create a new UV Island for the QuadPatch triangles of the Mesh, and then assign UVs based on the grid layout.
namespace UE { namespace Geometry { bool UE::Geometry::ComputeUVIslandForQuadPatch ( [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) & Mesh, const [FQuadGridPatch](API\Plugins\DynamicMesh\Selections\FQuadGridPatch) & QuadPatch, double UVScaleFactor, int UVOverlayIndex ) } }